I guess it depends on the way the actor plays it and the minds of the audience.
When I saw Hugh Panaro as Bobby last year, we discussed this backstage after an interview and I wish I'd kept recording at this point. He said that, "You don't know what exactly he's wishing for...it could be a wife, a girlfriend, a boyfriend, a dog, for his friends to leave him alone, for new friends. He wishes for something..."
At that point, I said, "But that's for you to know and us to just wonder," and he nodded. Then we went back to talking about his dog, Soot.